GNOME Nautilus before 3.23.90 allows attackers to spoof a file type by using the .desktop file extension, as demonstrated by an attack in which a .desktop file's Name field ends in .pdf but this file's Exec field launches a malicious "sh -c" command. In other words, Nautilus provides no UI indication that a file actually has the potentially unsafe .desktop extension; instead, the UI only shows the .pdf extension. One (slightly) mitigating factor is that an attack requires the .desktop file to have execute permission. The solution is to ask the user to confirm that the file is supposed to be treated as a .desktop file, and then remember the user's answer in the metadata::trusted field.
References
| Link | Resource |
|---|---|
| https://micahflee.com/2017/04/breaking-the-security-model-of-subgraph-os/ | Exploit Third Party Advisory |
| https://github.com/GNOME/nautilus/commit/bc919205bf774f6af3fa7154506c46039af5a69b | Issue Tracking Patch Third Party Advisory |
| https://github.com/GNOME/nautilus/commit/1630f53481f445ada0a455e9979236d31a8d3bb0 | Issue Tracking Patch Third Party Advisory |
| https://github.com/freedomofpress/securedrop/issues/2238 | Third Party Advisory |
| https://bugzilla.gnome.org/show_bug.cgi?id=777991 | Issue Tracking Vendor Advisory |
| https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=860268 | Issue Tracking Third Party Advisory |
| http://www.securityfocus.com/bid/101012 | Third Party Advisory VDB Entry |
| http://www.debian.org/security/2017/dsa-3994 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2018:0223 | Third Party Advisory |
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Information
Published : 2017-09-20 01:29
Updated : 2020-08-18 08:05
NVD link : CVE-2017-14604
Mitre link : CVE-2017-14604
JSON object : View
CWE
CWE-20
Improper Input Validation
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Products Affected
debian
- debian_linux
gnome
- nautilus